Pushing machine



2 SheetLs-Sheet 1 o. MACUMBER PUSHING MACHINE m R. m m. m Mm mm a w m wm M I. 0 Y B 2 m. b.3% w ,0, II M.

m m 4 a Filed March 9, 194a Aug. '22, 1950 O. MACUMBER Aug. 22, 1950PUSHING MACHINE 2 Sheet S-Sheet 2 Filed March 9, 194a Fig. 2.

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0f fa Macqmber INVENTOR.

Patented Aug. 22, 1950 orricis 2519, 680 BUSHING MACHINE- ttb M'acumber;Des- Moines; Iowa; assignor of thiuty'p'en'cent. toaLeone 0. MacumberCooper,

Application March" 9, 1948, seminal-arse This invention" relateseneral-ly to pipe jacks; and more; particularly to" a pipe pushingmachine comprising arr-elongated frame having a ground anchor and leveractuated jaws adapted to enga'ge the pipe and fbrce 'the same into theground? A primary object of invention is to provide a'ipipe pushingmachine which is very light in weight and therefore easily transportedfrom place" to place.

Another object of 1 this invention is to provide a machine of characterwhich, is automaticallw adjustable-for use with different sized Anotherobject of this ihventi'on'i's to provide a pipe pus-hihgmachin'e havinga divided frame allowing the machine tcbe inserted onto and" removedfrom pipes insitu or' partially inserted into the ground, this featureallowing the machihe to centre fromthe pipe and reversed and immediatelyemployed for withdrawing the pipe, as'when' withdrawing old pipes forreplacement and when withdrawing pipes which have encountered anobstruction in the ground and cannot be-d-riven further;

And a last object to be mentioned specifically is to provid'ea device ofthe character men tioned'ahove which its-relatively inexpensive andpracticableto manufacture, which" is: extremely simple and convenient-aswell as safe to use, and

whichwill give generally efficient and durable service-.- I

With these obiectsdefinitely in view, this invention resides in'certain: novel features of construction-,j combination and arrangementof elements and portions as will be hereinafter de-' scribed invthespecification, particularly pointed out in the appended claims, andillustrated in the accompanying drawings which form a materialpartofthis application; and in which? Figure 1' is a side elevationahviewofthis'machine operatively installed in' a hole the ground and with asection of pipe connected therein and supported by blocks used inconjunction with this machine and which may be considered an essentialpart thereof, the lever handle being fragmentarily shown in fourpositions and having a portion thereof broken away and the underlyingstructure illustrated in elevation and in vertical section;

Figure 2 is a view largely in top plan but showing a portion of thelever in horizontal section, the view being taken from the line 2-2 inFigure 1;

Figure 3 is a central longitudinal vertical seea claims... (ornate-2a);

. 2:. t'i'onal view ofthe structure illustrated" in Fig"- ure'ly Figure4 is a transverse vertical sectional view, takenonthe line i -4 inFigure 2; the. greater portion-cf theFigure being in end elevation;

Figure E is a three dimensional 'enlarged vie of one: of the disc like'jawsa- Similar characters of reference designate similar' or identicalelements a nd portions throughout' the specification and' throughout"the several viewsof' th'c' drawings.

Referring now to the drawings in detail, this invention is adapted to beused with an environ-- ment including sections of pipes one of which isillustrated at lil' and'which' will be provided with a nose cap l2 onthe forward endof the pipe. It will be understood that this machineisordinarily installed in a recess or hole in the ground a'd jacenttothe bank M into" which the pipe l fi is tobe forced by the operation ofthis machine.

This-ihvent'ion comprehends and includes a plurality of blocks l6 whicharesupported' on the ground" and are adapted po'siti'onally' andotherwise to support the pipe H) at the correct height and disposedin"the proper direction, these bloclss-being'ordinarily placed at each endofthe frame of the machine.

Theframe includes two parallel spaced elongated members i8 terminatingat the front end of the machine ih depending flanges 20 which compriseground anchors, being adapted to be driven vertically into the ground tohold the frame in rigid position. A pair of longitudinally spaced pipeguide members 22- are each of inverted li -shape and provided withattachment lugs 24 which are" bolted or riveted as at 26 to thef ramemembersifl; th'esepipe guide members being disposed transversely of theframe.

' Intermediate the ends of the frame members Ps -and preferably= betweenthe pipe guide members 22 there are provided a pair of angle brackets 28whereto the lower ends of the lever attaching forks 30 are pivoted, asat 32. The lever 34 is illustrated as secured to the upper ends of theforks 30 by any suitable means including bolts 36 and a tubular leverhandle extension 38 is fragmentarily illustrated in Figures 1 and 3.

A link structure, generally indicated by the numeral 40 carries a pairof similar disc-like jaws 42 on its forward end and is pivoted by pivotpins 44 to the fork portions 30 of the lever assembly. The linkstructure 40 includes a pair of similar elongated inflexible members 46and a pair of 3 offset attachment members 48, each associated with thesaid pivot pins 44, while the front ends of the members 46 are aperturedto receive longitudinally extending integral pins 49 on each end of thetransverse member 50 which is thus mounted pivotally on the forward endsof these members 46, the integral pins 49 being bored to receive cotterpins 52 or the like to retain these parts in proper assembledrelationship. The transverse member 50 carries the disc-like jaws 42 onthe under side of the transverse member, and journals fOr the disc-likejaws may comprise simple headed studs 54 inserted through eccentricbores 56 in the jaws 42 and threaded into the transverse member 50.

Each of the jaws 42 is formed with a serrated annular groove 58 adaptedto receivethe pipe 10 in gripping relation, it being understood that thejaws are spaced apart sufiiciently to allow the pipe 10 to be insertedtherebetween, and a spring 60 is secured under tension between a pair ofstuds 62 which are also eccentrically positioned on the disc-like jaws42.

The operation of this invention will be clearly understood from theforegoing description of the mechanical details thereof, taken inconnection with the above recitation of the objects sought to beachieved by this invention. In recapitulation, it-may be added that themachine is supported on the ground, ordinarily within a hole providedtherefor, while the pipe i6 is supported on suitable block means [6.Reciprocation of the handle will cause the link mechanism 40 to move thedisc-likev jaws 42 forwardly and rearwardly on the pipe [6, and thespring 66 will urge the jaws to rotate on the eccentrically mountedjournal members 54 so that these jaws will grip the pipe when the handleis being moved in one direction, as to the right in Figure 1, thusforcing the pipe into the bank i4. When it is desired to reverse theaction of this machine in order to withdraw a pipe, the divided framestructure described above allows the machine to be lifted above the pipel6, rotated through 180 degrees, and again installed operatively on thepipe with the jaws 42 contacting the same but gripping the pipe when thehandle is moved as to the left in Figure 1. It will be seen that thisinvention amply achieves all the objects recited above, and

further description would seem to be unnecessary.

Many minor variations may be made in the exact construction andproportionment of the various elements of this invention, all withoutdeparture from the spirit and scope thereof, and

elongated members to lie flat on the ground, each member having adepending flange comprising a ground anchor, inverted U-shaped pipeguides secured to and between said members, a hand lever having a pairof offset attaching forks pivoted on said frame, and means carried bysaid lever and having jaws for gripping a pipe when moved in onedirection, said parallel members and U-shaped pipe guides and forksbeing arranged to provide access of a pipe into the machine from theunderside thereof.

2. A pipe pushing machine comprising an elongated frame including a pairof parallel spaced elongated members to lie flat on the ground, eachmember having a depending flange comprising a ground anchor, invertedU-shaped pipe guides secured to and between said members, a hand leverhaving a pair of offset attaching forks pivoted on said frame, and meanscarried by said lever and having jaws for gripping a pipe when moved inone direction, said parallel members and U- shaped pipe guides and forksbeing arranged to provide access of a pipe into the machine from theunderside thereof, said forks having similar links pivoted thereto, saidlinks carrying a transverse member, said jaws being pivoted on saidtransverse member and being oppositely arranged toothed discs springbiased for engagement with a pipe. r

3. A pipe pushing machine comprising an elongated frame having a groundanchor, pipe guides on said frame, a hand lever pivoted on said frame,and means carried by said lever and having jaws for gripping a pipe whenmoved in one direction, said frame being longitudinally divided to allowthe insertion of the machine onto and removal from pipe in situ, therebyfacilitating reversal of the machine for withdrawing pipe from theground.

4. A pipe pushing machine comprising an elongated frame having a groundanchor, pipe guides on said frame, a hand lever pivoted on said frame,and means carried by said lever and having jaws for gripping a pipe whenmoved in one direction, said frame having a longitudinal openingextending from one side of the machine to the said jaws to allow theinsertion of the machine onto and removal from the pipe in situ, therebyfacilitating reversal of the machine for withdrawing pipe from theground.

OTTO MACUMBER.

REFERENCES CITED 7 The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

